Reamer for engine-cylinders and the like



4 c. e. ROLlN-E AND 0. NORRE.

'REAMER'FOR ENGINE CYLINDERS ANDTHE LIKE.

'Puclmou man AUG.1. 19|9 1,360,444. I Patented Nov. 30,1920.

2 SHEETS-SHEET l- 06w ajzaww am Charles 7207??? C. G. ROLINE AND C. NORRE. REAMER FOR ENGINE CYLINDERS AND THE LIKE.

APPLICAT ION FILED AUG- I919.

Patented Nov. 30, 1920.

2 SHEETS-SHEET 2.

NEW

UNITED STATES PATENT OFFICE.

cARLe. ROLINE AN CHARLES norms, or CHICAGO," rumors.

REAMER FOR ENGINE-CYLINDERS AND LIKE.

Application filed August 1,

T 0 (415 whom it may concern I I I Be it known that we, CARL G. RoLrNn and h-InnLns Nonnn, citizens of the United States residing at Chicago, in the county oflCook and State of Illinois, have invented certain new and useful Improvements in Reamers for Engine-Cylinders and the like, of which the following is a specification. I

This invention relates toimprovements in reamers particularly, adapted though not necessarily limited in its use for re-boring engine cylinders, and one of the objects of the invention is to provide an improved device of this character which is readily adapted for use in anyv cylinder that is provided with .a removable cylinder head, whereby the cylinderniay be re bored .with out necessitatingr'the removal otthe crank shaft and while the engine is 'TiHf'PQSltlOli uponthe:chassisf'f a ."To'th'c attainment:oithese ends and :the accomplishment .01. other; nejw" useful objects as. will appear, the invention con.- sists in the features of noveltyin substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawings illustrating this invention and in which;

Figure l is a verticallongitudinal sectional view of an improved device of this character constructed in accordance with the principles of, this invention with parts hroken away and showing the same in its initial position in the re-boring of a cylinder.

Fig. 2 is a detail sectional view ,takenon line 2+2, Fig. 1. I

Fig. 3 is a detail sectional view taken on line 83, Fig. I. I

Fig. 4c is a view similar to Flg. 1 showing the parts in another position and the positionwhich the parts will assume just at the time of automatically releasing one of the pilots.

. Fig. 5 his a sectional view on line 55, -Figm4. \M

Fig, 6 is a'detailperspective view of one of the cutter blades.

Referring moreparticularly to the drawing, the numerallO designates a cylinder which is to be bored. .1

The invention consists primarily of a shaft 11. which in useassumes an upriglit positionand the shaft is supported by means of a suitable bracket or support 12 anchored in any suitable manner to a part ot the adjusted f its inclinedj'lfacej'fio i 'llfe I and Java-11am "cutter; ThHS '1 Specification of Letters latent. Patented NOV." 30, 1920.

1919. SeriaiN o. 314339,

cylinder. casing or a fixed support; "This I support is provided withan opening 13 in which is arranged a bearing 14 pivotalliyl' mounted by means of the" trunnions 151 This bearing is provided with internal screw threads with which the'threads 16 connected with the shaft l'l cooperate so thatwhen'the shaft is rotated by means of the handle'lT, it willbe given an advancing movement'in a direction longitudinally of the shaft. The shaft may be of any desired size and length but is of a comparativelysmall size with respect to the internal bore of the cylinder. Secured to the shaft at any point intermediate its ends so asto rotate therewith is a Cutter head 18 plurality :of re cesses or seats 19 extendinglongitudinally thereof a nd openingfthro'ugh' the periph' eiidsi o f the -1iead YLSIai pre fi'ablyi I leeed aa e o are provided respectively II II II I I witli'fliieri'pliral I tlireads.21,-22 to receive lthefl'i'fiits er. collars v i s corres pondingly inclined." One extremity l of the cutter is inclined backwardly as at 28 and the opposite end of tlie cu'tter' is pref erably cut away as at 29 to form a'shoulde'r 30 which is also; inclinedv backwar'dly in, a

direction toward 'the' opposite end 28. The

One ofthese cutters 25 is seated'in each I of the seats 'or' openings 19 and areiei'a length that the ends 28-30i willtermi'nate adj acent' the inclined "shoulders of the cutter head and p'refe'rably project a slight distance beyond said ends.- The nut upon the threads21 in any "suitable'manner such as by means: of an instrument inserted in recesses 35. hen thiscollar '23 is adjusted thefinclinedwall or concav'eportion 24' will engage or overhang the incline'dfend 28 ofthe cutter and whenthefcollari i fwill, be seen that when the nuts 233 -24 are adjusted toward each other, they will clamp and holdgth'e}cutters in' position. The cut away portion29 of thercutprovided soas to permit theexfort-011 23 is providedwitha concavefa ce I34 and is adapted to be adjusted forwardly tremity 31 to extend over the collar 24. With this arrangement it is possible to permit the cutters to cut for the entire length of the cylinder and the collar will not form any obstruction. In order to vary the degree to which the cutting edge of the cutter projects beyond the cutter head, the inclined surface 26 of the cutter head and the inclined surface 27 of the cutter are provided. In order to accomplish this adjustment, the collar 23 is adjusted away from the end 28 of the cutter for any desired distance and by then adjusting the collar 24-, it will be seen that the cutters will be moved along the inclined surface 26, which will cause them to project for the desired distance. After the adjustment has been obtained, the collar 23 is then adjusted in clamping relation against the ends 280i the cutters.

In order to provide an accurate adjustment and an adjustment which can be produced by anyone, the face 36 of the collar 2-1 is provided with a plurality of openings 27 and the spring controlled pin 38 is provided to cooperate with these openings so that it is possible to obtain a micrometer adjustment of the cutters by anyone without necessitating the using of any other measuring implements. Obviously and if desired, an indicating gage may be provided around the periphery of the collar to indicate the adjustment.

The cutter head thus constructed is secured to the shaft 11. for rotation therewith in any suitable manner such as by means of a fastening screw 39 adapted to enter a groove 4L0 extending longitudinally of the shaft 11. This securing means also permits the cutter head to be adjusted in a direction longitudinally of the shaft.

Surrounding the shaft 11 on one side of the cutter head l8 is a pilot element 41 which is preferably of an inverted frusto' conical shape having a recessed portion 42 opening through one face and a recess 4:3 communicating with the recess 42.- This pilot is supported normally by means of the cutter head 18 and in order to permit the parts to be assembled closely, the recesses 42 -13 are provided so as to receive the end 19 of the cutter head and the collar 23 as shown more clearly in Big. 1.

A second pilot element is provided to cooperate with the pilot element a1 and embodies a body portion le through which the shaft 11 passes. Connected with the body portion are a series of anchor elements 45 which are adapted to be projected beyond the periphery thereof. This pilot element 1:4 is adapted to be inser ted into the other end of the cylinder 10 and when in position a member 16 having a wedge shaped portion a? adapted to be adjusted with respect to the body 1% through the medium of the threaded connection 4.8 so as to force the anchor elements 45 beyond the periphery of the body it and into engagement with the wall of the cylinder to temporarily anchor the pilot in position and thereby form a guide for one end of the shaft 11..

In order to provide a means whereby the pilot ell may be inserted into the cylinder in position to be anchored, by the insertion of the shaft 11, the pilot is detachably connected with the end of the shaft in any suitable manner such by means of a yielding lock d9 which is adapted to enter a recess in an extension 51 of the adjustable member 46.

In use, the head on the end of the cylinder hat is to be bored is removed. The pilot dd is then detachably connected with the end of the shaft 11. by inserting the end of the shaft into the pilot. The end of the shaft with the pilot connected thereto is then inserted into the cylinder until the pilot 4:4: assumes a position just inside of the lower end of the cylinder. The parts are then held in this position and the member 46 is adjusted with respect to the body of the pilot ed by means of a suitable adjustment tool or wrench 52 detachably connected with the member 46 as shown in Fig. 1, so as to project the anchor elements and cause them to grip the wall of the cylinder. The cutter head 18 is then adjusted or positioned so that the inclined ends 31 of the cutters 25 will rest upon the upper edge of the cylinder. These inclined ends will center the cutter head. and when in position as shown in Fig. l the pilot e1 will be supported by the cutter head. The bracket or support 12 is then anchored, the pivoted bearing l-l-l: permitting a proper positioning of the bracket with respect to the shaft and the in strument will then be in position for operation. lVhen the shaft 11 is rotated by the handle 17 the feed screw 16 will advance the shaft longitudinally and the cutter head 18. As theshaft is aoyanced the connection. l9 between the shaft and the pilot i l will yield and permit the shaft to be fed longitudinally "through the pilot e 1 while the pilot remains anchored. As the cutting advances the cut- Ill) ter head will advance and with it the shaft I 11 until the cutter head assumes a position entirely ,within the cylinder. As the cutter head advances the pilot ll will travel with it but when the pilot a1 engages the end of the cylinder, its advancing movement will be arrested while the cutter head continues to advance. In this position the pilot 14- will form a guide for the shaft at that end of the cylinder.

In order to automatically release the pilot 4A to permit the cylinder to be entirely bore d throughout its entire length, there is provided on the cutter head suitable projections or pins 53, any number of which may be provided, and similar. pins or projections are provided on the ad ustable element at of the pilot i4. These pins or pro ections 5-3-5 l are so located with respect to each other that when they are brought into intenengaging relation, a continued advancing movement of the cutter head will'cause the inter-engaging pins to interlock so that the element 46 of the pilot will be rotated with the cutter head 18 while the body of the pilot 4A remains still and this will adjust the element 16 in such a manner that the wedge shape port-ion 47 thereof will move out of engagement with the anchoring elements t?) to permit them to recede, thereby uniocking or releasing the pilot +14 so that the latter will drop out of the. end of the cylinder. \Vhen this pilot is thus removed, the cutter head 18 can be further advanced to travel entirely through the end of the cylinder from which the anchor e4 has been released.

With this improved construction it will be manifest that any cylinder may be rebored while the cylinder is in position and without removing the cylinder fromv the chassis. v f lVhile -tl 1e'-11 refe rred form of theinvention has been herein shown and'jdescribed, many changes maybe made inthe details 'of'const-ruction and in the.combinationantlerrangement of the several parts without departing from the spirit of this invention.

What is claimed as new is 1. A cylinder reamer embodyinga shaft, a cutter head connected with the shaft for rotation therewith, blades connected with the cutter head, a pilot loosely mounted upon the shaft for adjustment longitudi nally of the shaft, means for rotating the shaft and cutter head, means for imparting a longitudinal feeding movement to the shaftas it is rotated,a second pilot for the shaft, means for anchoring the last recited pilot, and means. operating automatically to release the anchored pilot.

2. A cylinder reamer embodying a shaft, a cutter head connected with the shaft for rotation therewith, blades connected with the cutter head, a pilot loosely mounted upon the shaft for adjustment longitudinally of the shaft, means for rotating the shaft and cutter head, means for imparting a longitudinal feeding movement to the shaft as it is rotated, a second pilot for the shaft, means for anchoring the last recited pilot, and means for automatically releasing the second recited pilot at a predetermined point in the advancement of the cutter head with the shaft.

3. A cylinder reamer embodying a shaft, a cutter head connected with the shaft for rotation therewith, blades connected with the cutter head, a pilot loosely mounted upon the shaft for adjustment longitudinally of the shaft, means for rotating the shaft and cutter head, means for imparting a longitudinal feeding movement to the shaft asit isrotaterha second pilot for the shaft, means for anchoring the last recited pilot, and means on the cutter head and the-second recited pilot and adapted to be brought into interengaging relation to automatically release the latter. I

4-. A cylinder reamer embodying a shaft, pilot elements through which the shaft has a. free longitudinal movement, means for temporarily anchoring one of the said elements at one end of thecylinder, a cutter head car'- ried by the shaf' intermediate the pilots,

said cutter head being connected with the a 'free' longitudinal movement, means for temporarily anchorin'gfone of thesaid elements at one, end of thecylinder, a cutter head carried by the shaft intermediate the pilots, said cutter head being connected with the shaft for advancement and rotation therewith, blades carried by the cutter head, the other of said pilots being normally supported by the cutter head, said cutter head being movable away from the last recited .pilot when the latter engages the end of the cylinder and is arrested in its forward movement longitudinally of the shaft, means for rotating the shaft, means for feedfin the shaft lon itudinally", and means for In as .1

automatically releasing the anchored pilot to permit. the cutter head to be fed entirely through-the cylinder.

6. A cylinder reamer embodying a shaft, pilot elements cooperating with the shaft for centering the shaft in the cylinder, said shaft having a free longitudinal movement through and a rotatable bearing in the pilot members, means for anchoring one of the pilot members, a cutter carried by theshaft intermediate the pilot members, a support,

a pivotally mounted bearing for the shaft and mounted upon the support, and a threaded connection between the shaft and bearing whereby the shaft will be fed longitudinally to advance the cutter head when a rotary movement is given to the shaft.

7 A cylinder reamer embodying a shaft, pilot elements cooperating with the shaft, said shaft and pilots being adapted for free relative movements indirections longitudinally of the shaft, a cutter fixed to the shaft intermediate the pilots, means for anchoring one of the pilots in one end of the cylinder, the other pilot being adapted to engage the other end of the cylinder and to be arrested ther by in its advancing movement, a stationary support with which the shaft has a threa led connection whereby i the shaft when rotated will be given a longitudinal movement to feed the cutter through the cylincer, and means for yieldingly connecting the first recited pilot to the shaft, whereby the same may be placed in position to be anchored by the insertion of the shaft into the cylinder.

8. A cylinder reainer embodying a. shaft, pilot members for the shaft, a cutter fixed to the shaft intermediate the said pilot members, means releasably connecting one of the pilots with the shaft, whereby the pilot may be positioned in the cylinder by the insertion of the shaft, means for anchoring the last recited pilot against movement, the other pilot being normally spaced from one end of the cylinder by the cutter, and adapted to follow the cutter as the latter is adyanced, the last re ited pilot being adapted to engage and be arrested by one end of the cylinder While the advancement of tne cntter continues, means for rotating the shaft, and means for imparting a longtudinal movement to the shaft as it is rotated Whereby the advancement of the shaft will autoniaticall release the anchored pilot 9. A c iinder ream r embodying a shaft, means for :n'lvancing the shaft in a direction longitudinally thereof, pilot elements connected with the shaft for adjustment one with relation to the other in a direction lengthwise of the shaft, a cutter connected with the shaft for rotation therewith and intermediate the pilots, one of said pilots embodying a body, anchoring elements carried the body and adapted to be projected therebeyond to engage the cylinder Wall, an

adjustable element carried by the body and adapted to project the said anchoring elements, and means whereby the said cutter will automatically adjust the said adjustable elements to release the said pilot.

10. A cylinder reamer embodying a shaft, means for advancing the shaft in a direction longitudinally there pilot elements connected with the shaft for adjustment one with relation to the other in a direction lengthwise of the shaft, a cutter connected With the shaft for rotation therewith and intermediate the pilots, one of said pilots embodying a body, anchoring elements carried by the body and adapted to be projected tnerebeyond to engage the cylinder wall, an adjustable element carried by the bony and adapted to project the said anchoring elements, and means whereby the said cutter will automatically adjust the said adjustable elements to release the said pilot, the last recited means embodying means carried by the said adjustable element and the said cutter and adapted to be brought into cooperative relation by the operation of the said shaft.

.11. A cylinder reamer embodying shaft, means for advancing the shaft in a direction lengthwise thereof, pilot elements connected with the shaft for adjustment one with relation to the other in a direction lengthwise of the shaft, a cutter connected with the shaft for rotation therewith and intermediate the pilots, one of said pilots embodying a body portion, anchoring elements carried by the body and adapted, to be projec d therebeyond into engagement with the cylinder wall, means for thus projecting the said elements, and means operating antomatically at a predetermined point in the operation of the cutter for releasing the anchored pilot.

In testimony whereof We have signed our names to this specification, on this 29th day of July, A. D. 1919.

CARL ROLINE. CHARLES NORR-E. 

